UL

Stories about UL (5)

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  NEC Article 706 and the 800 VDC Data Center Distribution Code Gap

  May 17, 2026 · Data Centers

  4 sources NEC Article 706 caps DC defaults at 100 V. Deploying 800 VDC data centers requires AHJ variances most US jurisdictions have not yet approved.

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  How a Solid-State Transformer Gets Certified: UL 1741

  April 18, 2026 · Power Electronics

  4 sources UL 1741 (+ Supplement SA/SB): dominant US safety standard for SST products in renewables and ESS. Certification timeline: 6-18 months per product variant, mid-6-figure cost; each variant requires…

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  KEPCO Operates the World’s Largest DC Distribution Network Demonstration on Seogeochado Island With 1500 VDC Architecture

  March 19, 2026 · Power Electronics

  4 sources Seogeochado DC island: world's largest DC distribution network demonstration, KEPCO Research Institute. 1500 VDC backbone replaces 22.9 kVAC distribution + step-down chain — aligns with utility-scale solar PV…

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  IEC 61000-4-30 Ed. 4 Drops Class B, Mandates Causal Flagging

  January 15, 2026 · Power Quality

  5 sources The International Electrotechnical Commission published Edition 4 of IEC 61000-4-30 in October 2025, removing Class B measurement accuracy, requiring causal event flagging, and extending conducted emission testing to…

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  Accuenergy AcuDC 260 Series 1000V EV Chargers

  January 5, 2026 · Power Quality

  4 sources Verified Accuenergy launched the AcuDC 260 Series in December 2025 with MID-certified and UL-certified models for EV fast charging and BESS, measuring DC voltage to 1000V at 0.1%…